Which best describes neurons? a/like all eukaryotic cells, neurons do not have the ability to regulate what substances go in and out of the cell. b/ like all eukaryotic cells, neurons have a nucleus that controls the activities of the cell. c/ unlike other eukaryotic cells, neurons cannot produce energy that can be used to carry out the life-sustaining processes of the cell. d/ unlike other eukaryotic cells, neurons have a cell membrane.

Liquid water turns into water vapor at which step in the water cycle? a. precipitation o b. water run off c. evaporation d. condensation

The terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these

Aresearcher designed an investigation to test what effect eating different types of food would have on blood insulin levels. she selected 10 male subjects who were all 25 years of age and in good health. the experiment took place over 3 days. at 8: 00 a.m. on each day, the subjects ate a meal consisting of only 1 type of food. they had their blood insulin levels measured after consuming the meal. on day 1 they ate a high fat diet, on day 2 they ate a high protein diet, and on day 3 they ate a high sugar diel what is the independent variable in this experiment? a the age of the subjects b the blood insulin level c the type of food consumed d the time of day the meal was consumed